Over in the "TV Shows I Am Binging" thread, I noted that I got hooked on This Is Us, which led to a quick discussion over the show's merits and a pledge to talk about the latest episode. We threw out the idea of having that conversation in the "What Are You Watching Right Now?" thread, but I decided to start one dedicated to the show. Although I titled it "Season 4," I'm not going to limit my obs…